text: The unsymmetric nature of the ligand and square planar coordination thereof gives rise to two possible geometric isomers: a cis and a trans form.
  Multiple ways of differentiating the geometric isomers exist, an easily accessible one being IR spectroscopy with the characteristic number of C–N, C–O, and Cu–N identifying the ligand configuration. Crystal appearance may also be of some value for isomer indication, though the ultimate diagnostic technique is X-ray crystallography.
  All forms of the complex have been characterized crystallographically, the most commonly isolated one being the cis monohydrate (x = 1).
  Isomerisation of the cis to the trans form occurs at high temperatures via a ring-twisting mechanism.